Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode

Autores
Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.
Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; Italia
Fil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Materia
Nonmesonic Weak Decay
Λ Hypernuclei
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/50006
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced modeBauer, EduardoGarbarino, Gaston LeonelRodríguez Peña, Carlos AndrésNonmesonic Weak DecayΛ Hypernucleihttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; ItaliaFil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaElsevier Science2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50006Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-1480370-2693CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2017.01.010info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0370269317300175info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:32:10Zoai:ri.conicet.gov.ar:11336/50006instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:32:10.593CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
title Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
spellingShingle Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
Bauer, Eduardo
Nonmesonic Weak Decay
Λ Hypernuclei
title_short Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
title_full Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
title_fullStr Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
title_full_unstemmed Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
title_sort Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode
dc.creator.none.fl_str_mv Bauer, Eduardo
Garbarino, Gaston Leonel
Rodríguez Peña, Carlos Andrés
author Bauer, Eduardo
author_facet Bauer, Eduardo
Garbarino, Gaston Leonel
Rodríguez Peña, Carlos Andrés
author_role author
author2 Garbarino, Gaston Leonel
Rodríguez Peña, Carlos Andrés
author2_role author
author
dc.subject.none.fl_str_mv Nonmesonic Weak Decay
Λ Hypernuclei
topic Nonmesonic Weak Decay
Λ Hypernuclei
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.
Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Garbarino, Gaston Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. IIS G. Peano; Italia
Fil: Rodríguez Peña, Carlos Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
description The nonmesonic weak decay of Λ hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two- and three-nucleon induced weak decay rates are predicted for CΛ12 by including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, ΛNNN→nNNN (N=n or p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp- and npp-induced decays, it amounts to ∼7% of the total nonmesonic rate and it is ∼1/2 of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/50006
Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-148
0370-2693
CONICET Digital
CONICET
url http://hdl.handle.net/11336/50006
identifier_str_mv Bauer, Eduardo; Garbarino, Gaston Leonel; Rodríguez Peña, Carlos Andrés; Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode; Elsevier Science; Physics Letters B; 766; 3-2017; 144-148
0370-2693
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2017.01.010
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0370269317300175
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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